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260 rivejä
5.5 KiB
260 rivejä
5.5 KiB
//gcc -m32 -fno-stack-protector -z execstack -no-pie blackmarket.c -o blackmarket
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#include <time.h>
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#include "blackmarket.h"
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#define BUFSIZE 0x1ff
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int diamond;
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void not_used(){
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system("/bin/sh");
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}
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Node *Node_create(){
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Node *node = malloc(sizeof(Node));
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assert(node != NULL);
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node->data = "";
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node->next = NULL;
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}
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List *List_create(){
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List *list = malloc(sizeof(List));
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assert(list != NULL);
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Node *node = Node_create();
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list->first = node;
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return list;
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}
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void List_append(List *list, char *str){
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assert(list != NULL);
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assert(str != NULL);
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Node *node = list->first;
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while(node->next != NULL){
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node = node->next;
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}
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node->data = str;
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node->next = Node_create();
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}
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int List_find(List *list, char *str){
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assert(list != NULL);
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assert(str != NULL);
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int index = 0;
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Node *node = list->first;
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while(node->next != NULL){
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int cmp = strcmp(str, node->data);
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if(cmp == 0){
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return index;
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}
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node = node->next;
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index++;
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}
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return -1;
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}
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int List_length(List *list){
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assert(list != NULL);
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Node *node = list->first;
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int length = 0;
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while(node->next != NULL){
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length++;
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node = node->next;
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}
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return length;
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}
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void Node_destroy(Node *node){
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assert(node != NULL);
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free(node);
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}
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void List_remove(List *list, int index){
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assert(list != NULL);
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if(index < 0){
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exit(0);
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}else{
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assert(index < List_length(list));
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if(index == 0){
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Node *node = list->first;
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list->first = list->first->next;
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Node_destroy(node);
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}else{
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Node *before = list->first;
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for(int i=1; i<index; ++i){
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before = before->next;
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index--;
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}
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Node *node = before->next;
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before->next = before->next->next;
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Node_destroy(node);
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}
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}
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}
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void List_print(List *list){
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if(list != NULL){
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printf("[");
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Node *node = list->first;
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if(node->next == NULL){
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printf("NULL");
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}
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while(node->next != NULL){
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printf("%s", node->data);
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node = node->next;
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if (node->next != NULL){
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printf(", ");
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}
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}
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printf("]\n");
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}
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}
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int sell_item(char *item){
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int current_wallet = 0;
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if(strcmp(item, "potatoes") == 0){
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printf("You've earn 50 wallet!\n");
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current_wallet = 50;
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return current_wallet;
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}else if(strcmp(item, "grape") == 0){
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printf("You've earn 100 wallet!\n");
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current_wallet = 100;
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return current_wallet;
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}else if(strcmp(item, "apel") == 0){
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printf("You've earn 60 wallet!\n");
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current_wallet = 60;
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return current_wallet;
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}
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}
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void message(){
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printf("You don't have enough wallet!\n");
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}
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void success_msg(char *item){
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printf("%s added to the list!\n", item);
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}
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void menu(){
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printf("+-----------------------+\n");
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printf("MASSIVE BLACKMARKET STORE\n");
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printf("+-----------------------+\n");
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printf("1. buy flag (200 Diamond)\n");
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printf("2. buy potatoes (50 Wallet)\n");
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printf("3. buy grape (100 Wallet)\n");
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printf("4. buy apel (60 Wallet)\n");
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printf("5. show items\n");
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printf("6. sell items\n");
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printf("7. check wallet\n");
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printf("8. check diamond\n");
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printf("9. get free diamond!\n");
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printf("10. exit\n");
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}
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int main(){
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List *l = List_create();
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char buffer[BUFSIZE+1], ans[2];
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int wallet = 300, temp, try = 0;
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LOOP:while(1){
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menu();
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printf(">>");
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fflush(stdout);
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scanf("%s", &ans);
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if(strcmp(ans, "1") == 0){
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if(diamond < 200){
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printf("Not enough diamond to buy flag!\nnothing to add.\n");
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goto LOOP;
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}else if(diamond >= 200){
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diamond = diamond - 200;
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List_append(l, "flag");
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success_msg("flag");
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goto LOOP;
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}
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}else if(strcmp(ans, "2") == 0){
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if(wallet < 50){
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message();
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goto LOOP;
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}
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success_msg("potatoes");
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wallet = wallet - 50;
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List_append(l, "potatoes");
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goto LOOP;
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}else if(strcmp(ans, "3") == 0){
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if(wallet < 100){
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message();
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goto LOOP;
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}
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success_msg("grape");
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wallet = wallet - 100;
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List_append(l, "grape");
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goto LOOP;
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}else if(strcmp(ans, "4") == 0){
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if(wallet < 60){
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message();
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goto LOOP;
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}
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success_msg("apel");
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wallet = wallet - 60;
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List_append(l, "apel");
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goto LOOP;
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}else if(strcmp(ans, "5") == 0){
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printf("\nYour Items :\n");
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List_print(l);
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goto LOOP;
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}else if(strcmp(ans, "6") == 0){
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getchar();
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printf("What items you want to sell ?\n");
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fflush(stdout);
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fgets(buffer, sizeof(buffer), stdin);
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printf("You sell : ");
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printf(buffer);
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strtok(buffer, "\n");
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int check = List_find(l, buffer);
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if(check == (-1)){
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printf("Not Found!\n");
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exit(1);
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}else{
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List_remove(l, List_find(l, buffer));
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wallet = wallet + sell_item(buffer);
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}
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}else if(strcmp(ans, "7") == 0){
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printf("\nYour Wallet : %d\n", wallet);
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goto LOOP;
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}else if(strcmp(ans, "8") == 0){
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printf("\nYour diamond : %d\n", diamond);
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goto LOOP;
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}else if(strcmp(ans, "9") == 0){
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try += 1;
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srand(time(NULL));
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int r = rand() % 10;
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if(try <= 4){
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printf("You get %d diamond\n", r);
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diamond = diamond + r;
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goto LOOP;
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}
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printf("No diamond for you!\n");
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goto LOOP;
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}else if(strcmp(ans, "10") == 0){
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printf("Thankyou for visiting!");
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exit(0);
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}else{
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fprintf(stderr, "Bad Request!\n");
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exit(0);
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}
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}
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}
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